摘要
为了改进建筑外墙外保温节能构造不精细、节能率低、易开裂脱落等缺陷,采用案例调查、资料分析、理论演绎等方法,认为问题症结在于:节能构造设计思想局限于固体导热范围;防裂机制虽注意到"放",但仍以"抗"为主;热桥处理不彻底等。并提出建筑外墙节能构造的若干改进意见:开发以遏制辐射换热为主的节能构造;充分发挥空腔中空气的冬季保温性能和夏季流通散热的特性;设置变形小缝,形成以"放"为主的防裂机制;热桥处理既要注意完整包覆,又要注意连接件材质的改进。建筑外墙节能构造需要进一步改进,大胆创新与认真细致都是必要的。
In order to overconce the building＇s exterior wall insulation＇s defects such as energy-saving structure is not precise, energy-saving rate is low and easy shedding ＆ cracking, the methods of case studies, data analysis and theoretical interpretation are used to identify the crux of the problem ： the energy-saving design is confined to solid thermal conductivity ; although the ＂release＂ is noted in crack control mechanism, yet still ＂resistance＂ mainly; the thermal bridge treatment is not completely, and so on. A number of energy-saving improvements on the construction of the external walls is proposed： To development of radiation-based energy-saving heat exchanger that can restrict heat radiation; giving full play to air cavity in the winter insulation performance and the summer thermal exchange and flow characieristics; setting up small seam of deformation, creating ＂release＂ in crack control mechanism; thermal bridge treatment should be perfected, and attention should be paid to the improvement on connectors material and so on. The exterior energy-saving structure still need further improvements; bold innovations and care are necessary.
出处
《工业建筑》
CSCD
北大核心
2008年第6期6-8,共3页
Industrial Construction
关键词
构造设计
建筑外墙外保温
节能
空腔
变形缝
structural design architecture＇s exterior insulation energy-saving cavity deformation joint
